Ninja Avenger

Edward Packard (born February 16, 1931) is an American author, creator of the Choose Your Own Adventure book concept and author of more than 50 books in the series, as well as many other children’s books. He is also a lawyer, essayist, and poet. Born in Huntington, New York, he is a graduate of Princeton University and Columbia Law School. [source](https://en.wikipedia.org/wiki/Edward_Packard_(writer))

Jay Leibold was born in Denver, Colorado. Jay has written Sabotage, Grand Canyon Odyssey, Spy for George Washington, The Antimatter Formula, The Search for Aladdin's Lamp, You Are a Millionaire, Beyond the Great Wall, Revenge of the Russian Ghost, Surf Monkeys, Ninja Cyborg, and Return of the Ninja in the Choose Your Own Adventure series. [source](https://www.cyoa.com/pages/jay-leibold?_pos=1&_psq=Jay%20Leibold&_ss=e&_v=1.0)